Heart Rate Guidelines for Exercise: Have you ever been holding the handles on one of the cardio machines and wondered why the screen is flashing 165 at you? Livestrong has provided basic heart rate information so you can learn what that number means and what numbers you should be aiming for while working out.

The Complete Guide to Interval Training: This chart from Greatist shows how to maximize your fat loss through interval training. It discusses everything from the basics to the top three leading interval programs!

Top 10 Make or Break Diet Moments: Fitness Magazine has listed 10 times that many of us struggle to make the nutritious decision, like before bedtime (2 a.m. BSkis delivery, anyone?). Follow these easy tips and you’ll be prepared next time junk food is calling your name.

15 New Muscle Builders: In order to continue seeing results and building muscle, workouts need some variety. Men’s Health has provided some tweaks for your routine so that each muscle group can be challenged in a new way!